Structural and magnetic properties of layered (formula presented)

Jaap F. Vente, Konstantin V. Kamenev*, Dimitriy A. Sokolov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The magnetic and structural properties of the layered manganite (formula presented) have been studied by powder neutron diffraction and magnetic susceptibility techniques between 5 and 300 K. The structure consists of pairs of face sharing (formula presented) octahedra to form (formula presented) dimers. The description of the crystal structure has been improved by employing a model in which some of the Sr and O ions are statistically distributed over two different sites. Three different magnetic phases can be distinguished in the temperature region studied. Below ∼75 K, the (formula presented) sublattice is antiferromagnetically ordered with an antiparallel alignment between all nearest-neighbor manganese ions. Between ∼75 and ∼150 K extensive quasi two-dimensional magnetic clusters are present. At temperatures above ∼150 K, one can observe correlations related to intradimer spin pairing. Truly paramagnetic behavior is not observed at any temperature below 300 K.

Original languageEnglish
Article number214403
JournalPhysical review B
Issue number21
Publication statusPublished - 1 Nov 2001


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